222 Gastric Glands of Dog after Gastroenterostomy 
disappeared. that it was very difficult to distinguish such parietal cells 
from lymphocytes. The same difficulty has presented itself in my work. 
Another feature is the infiltration of the interglandular connective 
tissue by small round cells and the very great increase in the number 
of red blood cells in the capillary vessels. The latter is probably due 
to inflammatory venous stagnation. It is most marked in the region 
of the gland necks and the deeper parts of the foveole, where the vessels 
are always greatly distended and where there are sometimes extravasa- 
tions. 
The degenerative process goes on during a few days following the 
operation. At stages of two and four days it is very marked, being 
less evident in later stages until in fourteen day stages it hardly appears 
at all. It is always limited to three or four glands at the most, lying 
in immediate proximity to the line of incision and suture. The loss 
of these glands by degeneration does not as a rule leave a gap in the 
mucous membrane, because the redundancy of the gastric fundus mucosa 
tends to keep the margin of the undegenerated portion opposed to unde- 
generated duodenal mucosa, with which it becomes continuous. 
2. Changes in gland lumina and foveole.—In the glands surrounding 
the anastomosis, which are not injured by the knife or sutures, no acute 
or extensive degenerative processes lke those described above go on. 
There are, nevertheless, very considerable postoperative changes. The 
foveole and gland lumina become dilated to form cystlike structures. 
These appear at first within two or three days after the operation in 
in the bottoms of the foveole only, but by the fourth day appear also 
in the gland necks and bodies. They are formed first in the glands 
next the line of operation and in later stages involve other glands as 
well, being found progressively farther away from it up to two week 
stages, when they exist throughout a zone 1 em. in width surrounding 
the anastomosis and including over one hundred glands. In early stages 
these dilatations appear as spherical or oval structures distended with 
secretion. A little later they are often pear-shaped, and at two weeks’ 
stages they are usually more or less completely collapsed and confined 
for the most part to gland bodies, appearing in every fifth or sixth gland 
only. They usually form disc-like structures at the end of the gland 
lying next the muscularis mucose, between it and the ends of other 
glands not so enlarged. After two weeks they begin to disappear, first 
from the glands farthest from the anastomosis, and by three months 
they are only occasionally present. One very large closed cyst appeared 
at the line of union in one of my six and a half months’ preparations. 
It was approximately spherical, and extended throughout the thickness 
